Reevaluation of species richness in Winnertzia (Diptera, Cecidomyiidae, Winnertziinae), with descriptions of 37 new species from Sweden, Peru and Australia Author Jaschhof, Mathias 0000-0003-3447-1620 Author Jaschhof, Catrin 0000-0002-1030-0934 mjaschhof@yahoo.de text Zootaxa 2020 2020-08-11 4829 1 1 72 journal article 8695 10.11646/zootaxa.4829.1.1 04b19d7f-1d74-41ec-b657-9b57f47826f9 1175-5326 4402757 7B34E058-03B4-44D0-AC4E-065B010172E1 Winnertzia silvestris sp. nov. Figs 124–127 ; Jaschhof & Jaschhof 2013 : fig. 45A (as W. pravdini ) Diagnosis. Males of this species can be recognized using the following characters in combination. The length of the eye bridge matches 4–5 lateral and 1–2 dorsal ommatidia; the neck of the fourth flagellomere is 1.1 times as long as the node ( Figs 124–125 ); the apical segment of the palpus is longer than each of the three preceding segments; pronotal setae number 9–17, anepimeral setae 5–9; the lateral mediotergal microtrichia are only little enlarged; the fore tibia is shorter than the second tarsomere (length ratio tb/T 2 = 0.8; Fig. 127 ); and the empodia are half as long as the claws whose basal tooth is as large as that usually found in Winnertzia ( Fig. 126 ). As regards genitalic characters ( Jaschhof & Jaschhof 2013 : fig. 45A), the posterior edge of the ninth tergite is perfectly sinuous; the gonocoxal emargination, which is smaller than that of W. pratensis , extends only slightly beyond the midlength of the gonocoxal synsclerite; and the gonostylus has a conspicuously steep-walled apex. Additionally, males of W. silvestris are on average larger (1.5–2.0 mm) than that of W. pratensis ( 1.4–1.6 mm ), a closely related species described above. Females and preimaginal stages of W. silvestris are unknown. Etymology. The Latin adjective silvestris translates as forest-dwelling, referring to the habitat in which all our specimens were collected. Type material. Holotype . Male , Sweden , Uppland , Uppsala , Fiby Nature Reserve , swampy section of oldgrowth mixed hemiboreal forest, 9 June–23 July 2010 , Malaise trap , M. & C. Jaschhof (spn GULI000020956 in NHRS ) . Paratypes . 1 male , Sweden , Skåne , Simrishamn , Stenshuvud National Park , old-growth mixed broadleaf forest, 16 June 2009 , sweepnet, MCJ (spn GULI000020955 in NHRS ) ; 1 male , Uppland, Knivsta, Rickebasta NR , swamp forest of alder interspersed with spruce trees, 1–27 August 2009 , MT , MCJ (spn SE 1655 in SDEI ) . Other material studied. Sweden : 1 male , Öland , Mörbylånga , Färjestaden , backyard with grove of young birches, 10 June–10 July 2015 , MT , MCJ (spn CEC 3054 in SDEI ) ; 1 male , Småland , Nybro , Bäckebo , Grytsjön NR , old-growth mixed hemiboreal forest, 17 June–16 July 2015 , MT , MCJ (spn CEC 3053 in SDEI ) . Distribution and phenology. The five specimens known of W. silvestris were collected in summer (June–Au-gust) in different woodlands in the southern half of Sweden ( Skåne to Uppland).